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<html><head><title>Handling of un-terminated long tokens in CSS</title>

<style>#ax,#bx,#cx,#dx{display:none}</style>

<style>#ad{color:/*}#ao{display:none}#ax{display:inline}</style>

<style>#bd{background:url("xxx"}#bo{display:none}#bx{display:inline}</style>

<style>#cd{background:url('xxx'}#co{display:none}#cx{display:inline}</style>

<style>#dd{background:url(xxx}#do{display:none}#dx{display:inline}</style>

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<div>This CSS parser <span id="ao">does not</span>
  backtrack<span id="ax">s</span> for unterminated comments.</div>

<div>It <span id="bo">does not</span>
  backtrack<span id="bx">s</span> for unterminated double-quoted url().</div>

<div>It <span id="co">does not</span>
  backtrack<span id="cx">s</span> for unterminated single-quoted url().</div>

<div>It <span id="do">does not</span>
  backtrack<span id="dx">s</span> for unterminated unquoted url().</div>

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